New to us 2005 Gulf Stream Crescendo. This is a picture of the kitchen switches. The switch with red light is unknown to us. Can't find anything is literature about what it is. Would appreciate help. Thanks!

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New to us 2005 Gulf Stream Crescendo. This is a picture of the kitchen switches. The switch with red light is unknown to us. Can't find anything is literature about what it is. Would appreciate help. Thanks!

This is the switch that turns on the ignighter for the propane water heater. When you turn the switch on, you should see the red light come on indicating the ignighter is trying to light the burner. If the burner lights, the red light goes out. If not, it will try 3 times and then fail leaving the red light on.
That is another story.

We have an 04 Gulfstream Atrium that is similar to the Crescendo and that switch "Is" for the electric element in the water heater. The water heater main switch is in the panel along with the tank level, water pump switches by the kitchen sink. If you want to heat water with the electric element first turn on the main switch, make sure the little rocker switch on your water tank is on then turn on the switch in your picture and done.

This is the switch that turns on the ignighter for the propane water heater. When you turn the switch on, you should see the red light come on indicating the ignighter is trying to light the burner. ...

HOWEVER...just to confuse you...that is only true if the water in the WH is cold/cool enough to need heating up. If it is already hot enough...no light. On a monthly basis I test the burner by shutting off the electric element, turning on the burner and then running hot water until I see the red light flash on and then eventually turn off. I also remove the WH cover to inspect the burner verify it is making heat.

BTW...at least in our Suburban WH there are 2 thermistors. 1 to control the electric element and the other to control the gas burner. In our case the electric thermistor heats the water to a higher temp than what would cause the gas burner to kick in.

EDIT...After looking at the picture again I tend to agree with mdpuff that it is the switch for the electric element in your water heater. From that posting it sounds like the propane switch is some place else.

If it is not a diesel then it is unlikely to be a block heater. If it is an electric water heater switch then you could test it by turning off the LP, turning on the switch and waiting a day or so to see if the water is hot. You may be able to hear the element heating or see a schematic on the water heater that will show the element or even be able to identify it. If it is for the LP hot water you would have discovered no hot water by now if it is off.

You're lucky! The previous owner of our Class A made a lot of really nice improvements, but never labeled anything as he know what all the switches did! He also had a thing with LED indicator lights. I would text him a pic of a switch and ask what it did. He always knew!